diff --git a/resources/js/ext.uls.interface.js b/resources/js/ext.uls.interface.js
index ac7f1ea5..4396924c 100644
--- a/resources/js/ext.uls.interface.js
+++ b/resources/js/ext.uls.interface.js
@@ -196,7 +196,7 @@
 	function userCanChangeLanguage() {
 		return mw.config.get( 'wgULSAnonCanChangeLanguage' ) ||
 			// mw.user.isNamed() added in MW 1.40. Remove after MLEB drop support for MW < 1.40
-			typeof mw.user.isNamed === 'function' ? mw.user.isNamed() : !mw.user.isAnon();
+			( typeof mw.user.isNamed === 'function' ? mw.user.isNamed() : !mw.user.isAnon() );
 	}
 
 	/**